Hungarian state-owned energy group MVM has begun work on a new utility-scale battery energy storage system at its Tiszaújváros energy complex, strengthening the site’s role in enhancing grid flexibility and balancing electricity generation. The project will deliver 31 MW of capacity with 62 MWh of storage, supporting the stability of the national power system.
The investment is valued at approximately €26 million and is being financed through the Recovery and Resilience Facility, backed jointly by the European Union and the Hungarian Government. Around €10.8 million of the total comes in the form of non-repayable EU grants, significantly easing the project’s financing requirements.
The new installation will rely on lithium-ion battery technology, housed in modular container units. It will operate alongside an existing battery system already in place at the site, further increasing the location’s overall storage capacity. Although technically independent, both battery facilities are designed to fulfill the same function of stabilizing the power system as renewable generation continues to expand.
Tiszaújváros is also earmarked for a major combined-cycle gas turbine power plant with a planned capacity of around 1,000 MW. While the battery storage system and the gas-fired plant will operate independently, MVM views them as complementary assets that together will enhance network responsiveness and facilitate the integration of variable renewable energy sources.
All permits, grid connection agreements and technical requirements have already been secured, enabling construction to proceed without delay. MVM expects the battery storage facility to be fully completed and operational by the end of June 2026, marking another important step in Hungary’s energy infrastructure modernization.